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feat: per-attribute preservation flags -p/-t/-o/-g with --no-* negations (protocol 2.22.0)

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Split FastSync's single use_metadata bundle into four independent rsync-parity attributes: preserve_perms, preserve_times, preserve_owner, preserve_group. use_metadata is now a derived transport bit (config_derived_use_metadata).

CLI: real -p/--perms, -t/--times, -o/--owner, -g/--group plus --no-perms/--no-times/--no-owner/--no-group (short and long) and --no-preserve; -a is now rsync -rlptgoD; --preserve = -pt; -A implies -p; -X does not; --chmod implies -p; --usermap/--groupmap/--chown imply owner/group per side; --incremental/--delta still auto-preserve unless negated.

Receiver: per-attribute FileAttrPolicy gating for files, dirs (modes applied at end of transfer), symlinks and specials; rsync -E read-bit rule; new files get source_mode & ~umask sanitized (no group/other write); per-side identity resolution; deferred directory metadata; batch dir-metadata replay; daemon modules without 'client owner = yes' no longer refuse plain -a but force super off (no ownership) with a warning.

Wire: PROTOCOL_VERSION 2.21.0 -> 2.22.0 (four appended config bools, golden 653 / 95530566005420798). FileMetadata/chunk/batch framing unchanged. Docs/CHANGELOG/CMake updated to 2.22.0.
This commit is contained in:
TapTap
2026-09-15 19:32:02 +02:00
parent b3f7cad4db
commit 34970b961c
35 changed files with 2523 additions and 485 deletions
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src/client/client_send.c
+7 -5
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@@ -176,9 +176,10 @@ static bool prepare_scanner(const Config* config, int num_threads, PreparedScann
options->excluded_paths = NULL;
options->excluded_mutex = NULL;
options->hardlinks = NULL;
/* P7 Wave D: capture source directory times whenever metadata rides the
wire. Whether they are APPLIED is decided receiver-side (-O skips). */
options->capture_dir_times = config->use_metadata;
/* P7 Wave D: capture source directory metadata when a directory attribute is
requested (-p for modes, -t for times unless -O omits them). Whether they
are APPLIED is decided receiver-side. */
options->capture_dir_times = dir_metadata_should_capture(config);
options->dir_entries = NULL;
options->dir_entries_mutex = NULL;
if (config->preserve_hard_links) {
@@ -1444,7 +1445,8 @@ static bool send_directory_entry(const Client* client, File* file, const Config*
stays within the receiver's bound, and a frame that would exceed it is never
emitted. */
static bool send_dir_times(const Client* client, const Config* config, ArrayList* dir_entries) {
if (!client || !config || !config->use_metadata || !dir_entries || dir_entries->size == 0)
if (!client || !config || !dir_metadata_should_capture(config) || !dir_entries ||
dir_entries->size == 0)
return true;
int fd = client->file_descriptor;
int index = 0;
@@ -2250,7 +2252,7 @@ int send_files(Config* config) {
receive_daemon_motd(client, config);
if (!prepare_scanner(config, 0, &prepared))
goto send_fail;
if (config->use_metadata) {
if (dir_metadata_should_capture(config)) {
dir_entries = array_list_create(file_destroy);
if (!dir_entries)
goto send_fail;